dmaengine: fix for cookie changes and merge

Fixed trivial issues in drivers:
	drivers/dma/imx-sdma.c
	drivers/dma/intel_mid_dma.c
	drivers/dma/ioat/dma_v3.c
	drivers/dma/iop-adma.c
	drivers/dma/sirf-dma.c
	drivers/dma/timb_dma.c

Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

drivers/dma/iop-adma.c

@@ -894,6 +894,7 @@ static enum dma_status iop_adma_status(struct dma_chan *chan,
 					struct dma_tx_state *txstate)
 {
 	struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
+	int ret;
 
 	ret = dma_cookie_status(chan, cookie, txstate);
 	if (ret == DMA_SUCCESS)